Telegraph-repeater.



PA TENTED DEC. 5, 1905.

F. W. JONES- TELEGRAPH REPEATER.

APPLICATION FILED, $121 .21, 1905.

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L UNITED STATES.

PATENT 4 clarion.

FRANCIS W. JONES, OF NEW YORK, N. Y.

TELEGRAPH-REPEATER.

Specification of Letters Patent.

Patented Dec. 5, 1905.

'Applieation filed September 21,1905. Serial No. 279,396.

To aZZ whom/.7129 concern I Be it known that I, FRANCIS W. JONES,a'citizen-of the United States, residing in the city of ,New York, inthe county and State of New York, have made certain new and usefulImprovements in Telegraph-Repeaters, of which 1 the followingis/a's'pecification.

This invention relates to automatic apparatus for interchangeablyrepeating current variations from one'circ'uit toanother.

- .The objectof this invention is to increase the certainty of operationof such-repeaters,

' netic transmitter operated by the relay. The

' tion having its coils in the circuitn.

- slmilar relay in the-circult m.

tially equal'in its magnetizing power to either.

one of the other two coils, but not to both.

The accompanying drawing" illustrates my invention. I

m is the western wire or circuit.

n is the eastern wire or circuit.

10 is a relayof ordinary form and constructand u are the ordinary formof electromagnetic transmitter. They are substantially identicalinconstruction and arrangement. The main-line break-points 2 30ftransmitter t are in circuit m.' The'main-line breakpoints 4 5 oftransmitter to are in circuit n. Both circuits are connected to groundthrough suitable main-line generators. i

are identical, and a description of one'is all that is necessary. Thearmature-lever 6 of the relay 1) engagesthe contact-stop 7 in the usualmanner. 10 is a local circuit. containing a local battery 9. The twoterminals of circuit 10 are connected to the relay-points6 and 7,respectively. The transmitter thas an armature-bar e, pivoted at 8. Ithas a magnet 12, upon which there are three separate insul'atedcoils ato. Coil ais in'the lcoal circuit 10. Coil-b is in a local circuit 131415,

containing local battery 16. Coil c is in a local circuit includingbattery.16, conductors 13 15, break points 19 20 of transmitter u, and

conductor 17. The current in coils a and Z) flows in the same direction,affects magnet 12 in the same sensepand is preferably of the samestrength in each coil. The current in coil 0 is opposed to the currentin coils a and I), and the strength of current in either coil 6 or Z; issubstantially equal to the strength of current in the coil 0. -Wheneither coil a or Z) is closed, the magnetism due to the current in coil0 is neutralized. The operation of the apparatus is as follows When thecircuit is broken or varied at the distant point on line m, relay 0releases its armature. Its local circuit is broken at points 6 7 Thecoil a of transmitter u is in opencir-- cuit. Coils Z) and 0 neutralizeeach other. Transmitter 'u, releases its armature-lever 20, breaking thelocal circuit 17 at 19 20, placing coil 0 of transmitter t on opencircuit. main contact-points 4 5 are immediately thereafter broken. Therelayp releases its armature-lever. Contact is broken at6 7. The coil aof transmitter is in open'circuit; but the coil 6 in thepermanently-closed local circuit 1314: 15, containing local battery 16,retains the armature-bar of transmitter tin its closed position. Whenthe key at the distant station on circuit m is closed or returned tonormal condition, the operation is reversed.

What I claim, and desire to secure by Letters Patent, is-

1. The combination of two main circuits, a relay in each circuit,main-line break-points in each circuit, an electromagnetic transmitterfor each break-point, and three coils on each transmitter-magnet, thefirst coil controlled by the break-points of the relay, the

'80 I The' second coil in a permanently-closed local cir- I60 .cuit andthethird coil controlled by contactpoints on the opposite transmitter.The local circuits of the two transmitters 2. The combination of twomain circuits, a

relay in each circuit, main-line break-points in each circuit, anelectromagnetlc devlce con- 5 trolling each break-point and three'coilson each of said magnets, a local circuit containing the first coiland the break-points of its relay, a closed local circuit containing thesecond coil and a local-circuit containing the third coil andbreak-points operated by the other transmitter.

3. In a repeater the combination with one circuit of a main-line relayand an electromagnetic tran'smitter, main-line break-points 4 operatedby said transmitter, three controlwhich is in a local circuit withbreak-points controlled by the other main circuit.

4:. The combination with an automatic repeater of means in one line forbreaking the circuit of the other line, said means including a relay inthe receiving-circuit, an electromagnetic transmitter operated by saidrelay, said transmitter having three controlling-coils, a localoircu'itincluding the first coil and the relay break-points; apermanently-closed local circuit containing the second coil and a localcircuit containing the third coil and contactpoints controlled by thetransmitting-circuit.

5. In a telegraphic repeater the combination with break-points of anelectromagnetic transmitter having two operating-coils and adifierential coil on its magnet and a circuitcontroller in the circuitof each operating-coil controlled by the two main circuit-s,respectively.

6, In a telegraphic transmitter the combination with main-linebreak-points of an opcrating-lever and an electromagnet controlling saidlever, said magnet having two cooperating coils and a differential coil.

7. In a telegraphic repeater the combination with break-points of anelectromagnetic transmitter having two operating-coils and adifferential coil for controlling the operation of thetransmitter-lever.

8. In a telegraphic repeater an electromagnetic transmitter having threecoils on its magnet, one of which is differential with respect to theothers; and means for opening the circuit of one after the other of thetwo last-named coils.

9. In a telegraphic repeater an electro-lnagnetic transmitter havingthree coils, a local circuit for each coil, one of which is permanentlyclosed in combination with means for opening one circuit after the otherof the two remaining.

FRANCIS W. JONES.

Witnesses:

H. R. MONAHAN, RC. HUDSON.

